Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:01 2012 Optimize a model with 1302 rows, 73 columns and 2604 nonzeros Presolve removed 912 rows and 0 columns Presolve time: 0.03s Presolved: 390 rows, 73 columns, 2431 nonzeros Variable types: 0 continuous, 73 integer (73 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.207992e+01, 230 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.07992 0 62 6.00000 12.07992 101% - 0s H 0 0 8.0000000 12.07992 51.0% - 0s 0 0 11.68353 0 70 8.00000 11.68353 46.0% - 0s 0 0 11.63276 0 68 8.00000 11.63276 45.4% - 0s 0 0 11.61867 0 70 8.00000 11.61867 45.2% - 0s 0 0 11.61376 0 69 8.00000 11.61376 45.2% - 0s 0 0 11.61137 0 69 8.00000 11.61137 45.1% - 0s 0 0 11.61131 0 69 8.00000 11.61131 45.1% - 0s 0 0 11.61129 0 69 8.00000 11.61129 45.1% - 0s 0 2 11.60278 0 69 8.00000 11.60278 45.0% - 0s * 35 11 5 9.0000000 11.25087 25.0% 40.0 0s Cutting planes: Clique: 41 Zero half: 2 Explored 46 nodes (2080 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%